1-Hydroxybenzotriazole → [4-(1H-benzoimidazol-2-ylmethyl)-phenyl]-(3-hydroxy-pyrrolidin-1-yl)-methanone

HRID 1163085노트

반응식

HRID 1163085 반응식
[NH:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[CH2:10][C:11]1[CH:19]=[CH:18][C:14]([C:15]([OH:17])=O)=[CH:13][CH:12]=1.Cl.CN(C)CCCN=C=NCC.ON1C2C=CC=CC=2N=N1.C(N(C(C)C)CC)(C)C.[NH:51]1[CH2:55][CH2:54][CH:53]([OH:56])[CH2:52]1>ClCCl.O>[NH:3]1[C:4]2[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=2[N:1]=[C:2]1[CH2:10][C:11]1[CH:12]=[CH:13][C:14]([C:15]([N:51]2[CH2:55][CH2:54][CH:53]([OH:56])[CH2:52]2)=[O:17])=[CH:18][CH:19]=1

참가 물질

8

반응물 5

HCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 982104-HydroxypyrrolidineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 190232394-((1H-benzo[d]imidazol-2-yl)methyl)benzoic acid

생성물 1

HCID 68426533[4-(1H-benzoimidazol-2-ylmethyl)-phenyl]-(3-hydroxy-pyrrolidin-1-yl)-methanone수율 34%

시약·촉매·용매 2

HCID 962Water용매HCID 6344Dichloromethane용매2회

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온도
0 °C

실험 절차

A solution of methyl 4-((1H-benzo[d]imidazol-2-yl)methyl)benzoate (5 g, 0.019 mol) in methanol was treated with sodium hydroxide (1.50 g, 0.037 mol) and water, heated to 65° C., stirred for 3 h and concentrated under reduced pressure. The resultant residue was dissolved in water and acidified with concentrated HCl. The resultant precipitate was removed by filtration and dried under vacuum overnight to provide 4-((1H-benzo[d]imidazol-2-yl)methyl)benzoic acid (82.0%). 1H NMR-(400 MHz, DSMO-d6): 7.96 (d, J=8 Hz, 2H), 7.91 (m, J=9 Hz, 2H), 7.60 (d, J=8 Hz, 2H), 7.52 (m, J=6 Hz, 2H), 4.65 (s, 2H). LCMS (ESI+) 253 (M+H). A portion of 4-((1H-benzo[d]imidazol-2-yl)methyl)benzoic acid (5.0 g, 0.020 mol) was dissolved in dichloromethane, cooled to 0° C., treated with 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (4.50 g, 0.023 mol), 1-hydroxybenzotriazole (HOBT) (3.21 g, 0.024 mol), and diisopropylethylamine (6.41 g, 0.049 mol), stirred at room temperature for 30 min, cooled to 0° C., treated with a solution of 3-pyrrolidinol (1.89 g, 0.021 mol) in dichloromethane, stirred at room temperature for 24 h and diluted with water. The phases were separated and the organic phase was washed sequentially with saturated aqueous NaHCO3, saturated aqueous NaCl, dried over sodium sulfate and concentrated to dryness under reduced pressure to provide [4-(1H-benzoimidazol-2-ylmethyl)-phenyl]-(3-hydroxy-pyrrolidin-1-yl)-methanone (34%) as a yellow solid. 1H NMR (400 MHz, DMSO-d6): 7.47 (s, 4H), 7.38 (d, J=7.6 Hz, 2H), 4.87 (s, J=4.2 Hz, 1H), 4.21 (d, 2H), 3.48 (m, 4 H), 1.85 (m, 2H). LCMS (ESI+) 322 (M+H).

후처리

  1. temperaturecooled to 0° C.
  2. stirringstirred at room temperature for 24 h
  3. customThe phases were separated
  4. washthe organic phase was washed sequentially with saturated aqueous NaHCO3, saturated aqueous NaCl
  5. dry with materialdried over sodium sulfate
  6. concentrationconcentrated to dryness under reduced pressure

출처 및 근거

ORD 기록
ord-883e053ff7694cd1ad9bd0c40c5bd5d8
출처 데이터셋
uspto-grants-2010_10
특허 번호
US07820825B2

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